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GB/T 1182-2018 PDF English

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GB/T 1182-2018: Geometrical product specifications (GPS) -- Geometrical tolerancing -- Tolerances of form, orientation, location and run-out
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GB/T 1182: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
GB/T 1182-2018English1500 Add to Cart 0-9 seconds. Auto-delivery Geometrical product specifications (GPS) -- Geometrical tolerancing -- Tolerances of form, orientation, location and run-out Valid
GB/T 1182-2008English170 Add to Cart 0-9 seconds. Auto-delivery Geometrical Product Specifications (GPS) -- Geometrical tolerancing -- Tolerances of form, orientation, location and run-out Obsolete
GB/T 1182-1996EnglishRFQ ASK 9 days Geometrical tolerancing--Generalities, definitions, indications on drawings Obsolete
GB 1182-1980English919 Add to Cart 6 days Tolerances of form and of position--Symbols and methods of indication on mechanical drawings Obsolete

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GB/T 1182-2018: Geometrical product specifications (GPS) -- Geometrical tolerancing -- Tolerances of form, orientation, location and run-out


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GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 01.100.20; 17.040.10 J 04 Replacing GB/T 1182-2008 Geometrical product specification (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out (ISO 1101.2017, MOD) Issued on. SEPTEMBER 17, 2018 Implemented on. APRIL 01, 2019 Issued by. State Administration for Market Regulation; Standardization Administration of PRC.

Table of Contents

Foreword... 3 1 Scope... 6 2 Normative references... 6 3 Terms and definitions... 7 4 Basic concepts... 11 5 Symbols... 13 6 Measured features... 17 7 Tolerance zone... 21 8 Marking of specification of geometrical tolerances... 23 9 Additional markings... 53 10 Theoretically exact dimension (TED)... 60 11 Local specification... 61 12 Extended measured features... 63 13 Intersection plane... 68 14 Orientation plane... 71 15 Direction features... 73 16 Collection plane... 77 17 Definition of geometrical tolerance... 78 Appendix A (Informative) Non-recommended and abolished marking methods ... 127 Appendix B (Informative) Clear rules and default rules for geometrical tolerance zones... 136 Appendix C (Informative) Filter... 144 Appendix D (Normative) ISO specific specification features for shapes... 147 Appendix E (Normative) Filter rules... 148 Appendix F (Normative) Relationship and dimension of graphic symbols... 163 Appendix G (Informative) The degree of consistency between various parts of the two standards GB/Z 26958 and ISO/TS 16610... 165 Appendix H (Informative) Location in GPS matrix... 166 References... 168

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 1182-2008 "Geometrical product specification (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out". Compared with GB/T 1182-2008, the main technical changes are as follows. - ADD a three-dimensional annotation legend, to the visual annotations, that interpret the technical specifications; - ADD the interpretation and marking method of the concept of variable width tolerance zone; - ADD the interpretation and marking method of the concept of offset tolerance zone; - ADD the interpretation and marking method of the concept of filter specification features; - ADD the interpretation and marking method of the concept of the reference element's fitting specification feature; - ADD the interpretation and marking method of the concept of full surface; - ADD the interpretation and marking method of the concept of intersection planes; - ADD the interpretation and marking method of the concept of orientation plane; - ADD the interpretation and marking method of the concept of directional features; - ADD the interpretation and marking method of the concept of collection plane; - ADD the clear rules and default rules of the geometrical tolerance zone; - ADD the filtering rules. This standard uses the redrafting method, to amend and adopt ISO 1101.2017 "Geometrical product specification (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out". Compared with ISO1101.2017, this standard has technical differences. The terms, which are involved in these differences, have been marked by a vertical single line (︱) on the outer margins. The corresponding technical differences and their reasons are as follows. - Regarding normative references, this standard has adjusted the technical differences, to adapt to China's technical conditions. The adjustments are reflected in Chapter 2 "Normative references". The specific adjustments are as follows. ● USE GB/T 4249-2018, which modifies and adopts international standard, to replace ISO 8015.2011; ● USE GB/T 4457.4-2002, which modifies and adopts international standard, to replace ISO 128-24.1999; ● USE GB/T 13319, which identically adopts international standard, to replace ISO 5458; ● USE GB/T 16671-2018, which modifies and adopts international standard, to replace ISO 2692.2014; ● USE GB/T 17851, which modifies and adopts international standard ISO 5459; ● USE GB/T 17852, which modifies and adopts international standard ISO 1660; ● USE GB/T 19096, which identically adopts international standard, to replace ISO 13715; ● USE GB/Z 24637.1, which identically adopts international standard, to replace ISO 17450-1.2011; ● USE GB/Z 24637.2, which identically adopts international standard, to replace ISO 17450-2; ● USE GB/T 24734, which non-equivalently adopts international standard, to replace ISO 16792; ● USE GB/Z 26958 (all parts) to replace ISO/TS 16610 (all parts). Refer to Appendix G, for the degree of consistency between various parts of the two standards. This standard also made the following editorial changes. - DELETE Table 1 in the introduction of ISO 1101.2017.CHANGE "Table 2 ~ Table 10" in ISO 1101.2017 to "Table 1 ~ Table 9". - ADD Appendix G (informative) - The degree of consistency between various parts of the two standards GB/Z 26958 and ISO/TS 16610; - CHANGE the Appendix G of the original ISO 1101.2017 into Appendix H. This standard was proposed by AND shall be under the jurisdiction of the National Standardization Technical Committee for Product Geometric Technical Specifications (SAC/TC 240). Drafting organizations of this standard. China Productivity Center for Machinery, China Aviation Technology Research Institute, Zhengzhou University, SAIC Motor Corporation Technology Center, Beijing Automotive Co., Ltd., Omanco (Shanghai) Consulting Co., Ltd., Pan Asia Automotive Technology Center Co., Ltd., Dekey (Beijing) Technology Co., Ltd., Xi'an Jiaotong University, SAIC-GM- Wuling Automobile Co., Ltd., Qoros Automobile Co., Ltd., Carl Zeiss (Shanghai) Management Co., Ltd., Dalian Institute of Technology, Hexagon Survey Technology (Qingdao) Co., Ltd., Shanghai Institute of Metrology and Testing Technology. The main drafters of this standard. Ming Cuixin, Wang Xili, Zhang Linna, Shen Xiaojun, Teng Lijing, Yu Jichang, Hu Min, Long Dongfei, Jing Weixuan, Zhou Jiangqi, Xu Mingyang, Qiu Chenxi, Han Dingzhong, Zhao Fengxia, Wu Yongping, Wang Hong, Wang Huizhen, Qu Chaoqing, Zhu Yue. This standard replaces the standard previously issued as follows. - GB/T 1182-1996, GB/T 1182-2008. Geometrical product specification (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out

1 Scope

This standard defines the symbols and description rules, for the geometrical tolerance specifications of workpieces. This standard gives the basic principles of geometrical tolerance specifications. The legends in this standard are intended to illustrate how to use visual annotations (including annotations, such as TED), to fully interpret technical specifications.

2 Normative references

The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard. GB/T 4249-2018 Geometrical product specifications (GPS) - Fundamentals - Concepts, principles and rules (ISO 8015.2011, MOD) GB/T 4457.4-2002 Mechanical drawings - General principles of presentation - Lines (ISO 128-24.1999, MOD)

3 Terms and definitions

The terms and definitions, as defined in GB/T 4249-2018, GB/Z 26958 (all parts), GB/Z 24637.1, GB/Z 24637.2, ISO 17450-3, ISO 22432, ISO 25378.2011, as well as the following terms and definitions, apply to this document. A single feature, that is seamlessly combined by multiple single features. The plane, which is established by the features on the workpiece. It is used to define a closed compound continuous features.

4 Basic concepts

At present, the detailed separation rules (defining the boundaries of the measured features) have not been formulated in the GPS standards. - The location specification can control the location deviation, direction deviation, form deviation of the measured feature. - The direction specification can control the direction and form deviation of the measured feature, BUT it cannot control its location.

5 Symbols

The symbol definitions, which are used in the symbol part of the tolerance grid, are as shown in Table 1.

6 Measured features

Unless otherwise specifically marked, the geometrical tolerance specification applies to a single complete feature. When the measured feature is not a single complete feature, see 8.4.2, Chapter 9, Chapter 11. ● The arrow can be placed on the horizontal leader line AND use the leader line to point to the area feature [see Figure 3a)]. When the geometrical tolerance specification is applicable to the derived features (center line, center plane, or center point), it shall be marked in one of the following ways.

7 Tolerance zone

Unless otherwise marked with graphics, the tolerance value remains constant, along the length direction of the measured feature. For derived features, if the tolerance zone of the derived feature consists of two parallel planes AND is used to constrain the centerline, OR it is composed of a cylinder AND is used to constrain the center point of a circle or sphere, the orientation plane grid shall be used to control the direction of the plane or cylinder.

8 Marking of specification of geometrical tolerances

Tolerance requirements shall be marked in a rectangular grid, which is divided into two or three parts. The optional datum part of the third part may contain one to three grids. As shown in Figure 12, these parts are arranged in order from left to right. The tolerance value is a mandatory specification feature. Tolerance values shall be given, in the units which are used for linear dimensions. The width of the tolerance zone, which is given by the tolerance value, is perpendicular to the measured feature, by default. The tolerance zone has a constant width, by default. If the width of the tolerance zone changes linearly between two values, these two values shall be marked separately with "-", as shown in Figures 14 and 7.2.

9 Additional markings

If the characteristic is to be applied as a set of all required tolerance zones, to the measured feature, for example -- the tolerance zones of all features are in a theoretically exact relationship with each other; the transition area from one tolerance zone to the next, is the extension of these two tolerance zones, meanwhile forms a sharp angle -- THEN, CZ (combined tolerance zone) shall be used together with the "full circumference" or "full surface" symbol. For the abolished marking method, see A.3.4. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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